I don't believe this has ever been done before in the television industry, but there's a first time for everything, especially when necessity becomes the mother of invention:
Can a show exist simultaneously in network runs and in front-end syndication? (Front-end syndication is the kind Star Trek: The Next Generation ran all its new episodes in.)
My thinking is that in any market whose ABC affiliate blackballed the show, all the other stations -- regardless of their affiliation or independence status -- would get to bid on the right to carry new episodes through a standard front-end syndication contract. The barter syndication model would be employed, in particular, so that all national ads booked on ABC could and would also appear in the syndicated versions' satellite feeds as built-ins. The same number of minutes alloted to ABC affiliates for local ads during its network feeds of Kimmel would, in turn, be present in each syndication feed as local ad insertion blacks.
Voila? Or nay?
I don't know about that model, but in the 60s and 70s, it was not unheard of for a network that had a station that refused to clear a show to offer it to another local station and make a big deal of it. It often was an independent (to avoid schedule conficts and contract tampering concerns with competing networks), and the network with help with in-market promotion of the show.
But---those were usually one or two stations at a time. Nothing of this scale.
